Mercedes CLS 350 (2.0T) MHEV 299 hp — Stage 1 file (+29 hp)
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Stage 1 file for Mercedes CLS 350 (2.0T) MHEV 299 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes CLS 350 (2.0T) MHEV 299 hp ECU
Mercedes CLS (2018 - C257) 350 (2.0T) MHEV 299 hp — premium petrol engine of the passenger segment of the Mercedes-Benz Group AG (Mercedes-Benz, AMG, Maybach, Smart, EQ) group (Германия, 1926). Stage 1 chip tuning raises power from 299 to 328 hp (+29 hp, +10%) and torque from 400 to 450 Nm (+50 Nm). This engine ships with different ECU variants: Siemens/Continental CPC_NG, Bosch MED17.7.7, Bosch VGS3-NAG3. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 3 configurations · 3 ECU variants. A modern petrol engine built in 2018 — a generation with encrypted ECU protection (Tricore TPROT); top engines require Bench.
The Mercedes-Benz Group AG (Daimler AG until 2022) comprises Mercedes-Benz, AMG, Maybach, Smart and the EQ line. AMG is the performance division of Mercedes (since 1967), building engines on the 'one man, one engine' principle in Affalterbach. Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. Maybach uses Mercedes engines for the ultra-luxury segment, with the emphasis on quietness and smoothness. High-output Mercedes turbo petrol engines are the flagship models, and Stage 1 delivers a solid gain. Mercedes encryption is among the toughest in the industry, especially on modern models.
The Mercedes community in Europe has a large pool of available Stage files for the standard models. On modern Mercedes, the encryption requires specialised Bench tools. The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. High-output Mercedes engines are premium-class with solid headroom for Stage 1. On modern high-output Mercedes, Bench reading is often required because of the encryption. The Mercedes premium segment is a high-output platform with Stage 2 potential.
Frequently asked questions
How much does the power of the Mercedes CLS 350 (2.0T) MHEV 299 hp increase after Stage 1?
The Stage 1 gain for the Mercedes CLS 350 (2.0T) MHEV 299 hp is 29 hp (+10%) over the stock 299 hp, for a total of 328 hp. Torque rises from 400 to 450 Nm (+50 Nm).
What is Stage 1 chip tuning for the Mercedes CLS?
Stage 1 is a software optimization of the factory ECU firmware of the Mercedes CLS with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +29 hp with no hardware changes.
Do you need hardware changes for Stage 1 on the Mercedes CLS?
The high-output Mercedes CLS 350 (2.0T) MHEV 299 hp has a conservative factory calibration aimed at the mass market. Stage 1 unlocks the engine's real potential while turbo and injector life are preserved.
What is Stage 2 for the Mercedes CLS 350 (2.0T) MHEV 299 hp?
Stage 2 on the Mercedes CLS 350 (2.0T) MHEV 299 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.
Which control units is the Mercedes CLS 350 (2.0T) MHEV 299 hp built with?
The Mercedes CLS 350 (2.0T) MHEV 299 hp comes with 3 ECU variants: Siemens/Continental CPC_NG, Bosch MED17.7.7, Bosch VGS3-NAG3. Calibration is done for the specific unit after the revision is identified.
Does the factory warranty of the Mercedes CLS remain valid after Stage 1?
After remapping the Mercedes CLS, the official factory warranty on the engine and gearbox is lost (this applies to any manufacturer when the ECU is modified). CHIPOK guarantees the quality of the calibration and free revisions.
How long is the wait for a Stage 1 remap for the Mercedes CLS?
Reading and writing via OBD takes 25-30 minutes on the Mercedes CLS. Bench reading (BDM/JTAG) takes about 60 minutes plus refitting. Remote file processing at CHIPOK takes 5-30 minutes.
How do you roll back to the factory firmware of the Mercedes CLS?
Before Stage 1 the original of the Mercedes CLS 350 (2.0T) MHEV 299 hp is read out and saved — returning to the factory state is possible at any time.
How much does chip tuning the Mercedes CLS 350 (2.0T) MHEV 299 hp cost?
The remap price for the Mercedes CLS 350 (2.0T) MHEV 299 hp is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.